| 环氧丙烷嵌入乙酸酐合成1,2-丙二醇二乙酸酯的绿色化学途径 |
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| 引用本文： | 吉峙润,方云,贾言,胡学一.环氧丙烷嵌入乙酸酐合成1,2-丙二醇二乙酸酯的绿色化学途径[J].精细化工,2007,24(4):413-416. |
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| 作者姓名： | 吉峙润 方云 贾言 胡学一 |
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| 作者单位： | 江南大学,化学与材料工程学院,江苏,无锡,214122 |
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| 基金项目： | 教育部科学技术研究重点项目 |
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| 摘 要： | 用Mg-Al基复合物催化环氧丙烷(PO)一步嵌入乙酸酐(AA)合成了1,2-丙二醇二乙酸酯(PGDA),经红外光谱、电喷雾质谱鉴定得到了预期产物。研究了反应温度、n(PO)/n(AA)、PO滴加或一次性投入方式对单PO加成选择性的影响。实验结果表明,当Mg-Al基复合物用量为1.6 g/100 g AA,n(PO)/n(AA)=1,以0.75g/min滴加PO,反应温度130~135℃时,单PO加成选择性达到w(PGDA)=98.2%。与传统合成二元醇二酯的方法相比,该路线无需过量加入AA原料,亦不生成副产物,是一条具有工业化前景的合成二元醇二酯的高原子经济性的绿色化学途径。
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| 关 键 词： | 嵌入反应 1 2-丙二醇二乙酸酯 乙酸酐 环氧丙烷 绿色化学 |
| 文章编号： | 1003-5214（2007）04-0413-04 |
| 修稿时间： | 2006-10-242006-12-08 |
A Green Chemistry Approach to Synthesize 1,2-Propylene Glycol Diacetate from Acetic Anhydride Inserted by Propylene Oxide |
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| JI Shi-run,FANG Yun,JIA Yan,HU Xue-yi.A Green Chemistry Approach to Synthesize 1,2-Propylene Glycol Diacetate from Acetic Anhydride Inserted by Propylene Oxide[J].Fine Chemicals,2007,24(4):413-416. |
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| Authors: | JI Shi-run FANG Yun JIA Yan HU Xue-yi |
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| Affiliation: | School of Chemical and Material Engineering,Southern Yangtze University, Wuxi 214122 , Jiangsu , China |
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| Abstract: | A one-pot process catalyzed by Mg-Al composite is used to synthesize 1,2-propylene glycol diacetate(PGDA) by inserting propylene oxide (PO) into acetic anhydride(AA) directly.The product is characterized by FTIR and ESI-MS.The selectivity for PGDA is 98.2% under the optimum reaction conditions that amount of Mg-Al composite is 1.6 g/100 g acetic anhydride,n(PO)/n(AA)=1,and drop PO at feeding rate of 0.75 g/min at 130～135 ℃.Compared with traditional method to synthesize glycol diesters,this novel one-pot process is a green chemistry approach with excellent atomic economy characteristics since neither extra reactant is needed nor by-product is produced. |
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| Keywords: | insertion reaction 1 2-propylene glycol diacetate acetic anhydride propylene oxide green chemistry |
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